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CVE-2022-26496

CRITICALCVSS 9.8/10EPSS 3.47%

Last modified

CVE-2022-26496 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.. EPSS estimates a 3.47% chance of exploitation in the next 30 days.

Description

In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
3.47%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Network Block Device ProjectNetwork Block Device< 3.24
DebianDebian Linux10.0
DebianDebian Linux11.0
FedoraprojectFedora34
FedoraprojectFedora35
FedoraprojectFedora36

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-26496?
In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.
How severe is CVE-2022-26496?
CVE-2022-26496 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.47% probability of exploitation in the next 30 days.
How do I fix CVE-2022-26496?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-26496?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST